# get git hash
macro(get_git_hash _git_hash)
    find_package(Git QUIET)
    if(GIT_FOUND)
      execute_process(
        COMMAND ${GIT_EXECUTABLE} log -1 --pretty=format:%h
        OUTPUT_VARIABLE ${_git_hash}
        OUTPUT_STRIP_TRAILING_WHITESPACE
        ERROR_QUIET
        WORKING_DIRECTORY
          ${CMAKE_CURRENT_SOURCE_DIR}
        )
    endif()
endmacro()

# get git branch
macro(get_git_branch _git_branch)
    find_package(Git QUIET)
    if(GIT_FOUND)
      execute_process(
        COMMAND ${GIT_EXECUTABLE} symbolic-ref --short -q HEAD
        OUTPUT_VARIABLE ${_git_branch}
        OUTPUT_STRIP_TRAILING_WHITESPACE
        ERROR_QUIET
        WORKING_DIRECTORY
          ${CMAKE_CURRENT_SOURCE_DIR}
        )
    endif()
endmacro()
